[jira] [Created] (SPARK-5668) spark_ec2.py region parameter could be either mandatory or its value displayed

["Miguel Peralvo (JIRA)" <ji...@apache.org>]

Miguel Peralvo created SPARK-5668:
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             Summary: spark_ec2.py region parameter could be either mandatory or its value displayed
                 Key: SPARK-5668
                 URL: https://issues.apache.org/jira/browse/SPARK-5668
             Project: Spark
          Issue Type: Improvement
          Components: EC2
    Affects Versions: 1.2.0, 1.3.0, 1.4.0
            Reporter: Miguel Peralvo
            Priority: Minor


If the region parameter is not specified when invoking spark-ec2 (spark-ec2.py behind the scenes) it defaults to us-east-1. When the cluster doesn't belong to that region, after showing the "Searching for existing cluster Spark..." message, it causes an "ERROR: Could not find any existing cluster" exception because it doesn't find you cluster in the default region.

As it doesn't tell you anything about the region, It can be a small headache for new users.

In http://stackoverflow.com/questions/21171576/why-does-spark-ec2-fail-with-error-could-not-find-any-existing-cluster, Dmitriy Selivanov explains it.

I propose that:

1. Either we make the search message a little bit more informative with something like "Searching for existing cluster Spark in region " + opts.region.

2. Or we remove the us-east-1 as default and make the --region parameter mandatory.





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